blog--用户登录与注册
1.注册signUp
将用户注册到数据库（使用INSERT来插入）
userMapper.java（接口）
package com.xueba.boke.dao;
import com.xueba.boke.bean.User;
import org.springframework.stereotype.Repository;
@Repository
public interface UserMapper {
public void login(User user);
}
userMapper.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.xueba.boke.dao.UserMapper">
<!--public void login(User user);-->
<!-- parameterType：参数类型，可以省略，
获取自增主键的值：
mysql支持自增主键，自增主键值的获取，mybatis也是利用statement.getGenreatedKeys()；
useGeneratedKeys="true"；使用自增主键获取主键值策略
keyProperty；指定对应的主键属性，也就是mybatis获取到主键值以后，将这个值封装给javaBean的哪个属性
-->
<insert >
INSERT INTO userInfo(name, password) VALUES(${userName}, ${userPwd})
</insert>
</mapper>
注册之后返回到登录界面
使用redirect:../login.jsp进行转发
@RequestMapping(value="/signUp", method=RequestMethod.POST)
public String signUp(HttpServletRequest request, HttpServletResponse response){
String name = request.getParameter( "userName" );
String email = request.getParameter("Email");
String password = request.getParameter("Password");
System.out.println("----------" + email);
User user = new User(name, password, email);
System.out.println("user: " + user);
userService.signUp( user );
return "redirect:../login.jsp";
}
2.用户登录
回显问题
开启驼峰命名
属性mapUnderscoreToCamelCase表示是否启用下划线与驼峰式命名规则的映射（如 => ）。其实mybatis是支持数据库属性和实体对象的驼峰命名映射，只需要开启这个配置即可。
数据库字段，我们一般都用下划线分隔 first_name
但是Model中的属性，一般用驼峰命名 firstName
如果需要自动映射，则配置mybatis-config.xml文件 JavaEE——Mybatis（13）--MyBatis与Spring整合--Spring SpringMVC相关配置文件 及Spring整合MyBatis
UserController.java中
package com.xueba.boke.controller;
import com.xueba.boke.bean.User;
import com.xueba.boke.service.UserService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
/**
* Create by yyq on 2018/1/17
*/
@Controller
@RequestMapping("/user")
public class UserController {
private static Logger log= LoggerFactory.getLogger(UserController.class);
@Autowired
UserService userService;
@RequestMapping(value="/login",method= RequestMethod.POST)
public String login(HttpServletRequest request, HttpSession httpSession){
String userName = request.getParameter("userName");
String userPwd = request.getParameter("userPwd");
User visitor=new User(userName, userPwd);
System.out.println("visitor: " + visitor);
User user = userService.login(visitor);
/*添加日志*/
log.debug(user.toString());
if(user == null){
System.out.println("用户不存在");
return "login";
}else{
if(!user.getUserPwd().equals(visitor.getUserPwd())){
System.out.println("密码不正确");
return "login";
} else{
System.out.println("user" + user);
httpSession.setAttribute("user", user);
return "index";
}
}
}
@RequestMapping(value="/signUp", method=RequestMethod.POST)
public String signUp(HttpServletRequest request, HttpServletResponse response){
String name = request.getParameter( "userName" );
String email = request.getParameter("Email");
String password = request.getParameter("Password");
User user = new User(name, password, email);
userService.signUp( user );
return "redirect:../login.jsp";
}
}
UserServiceImpl.java
package com.xueba.boke.serviceImp;
import com.xueba.boke.bean.User;
import com.xueba.boke.dao.UserMapper;
import com.xueba.boke.service.UserService;
import org.apache.ibatis.annotations.Param;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.Map;
/**
* Create by yyq on 2018/1/17
*/
@Service("UserService")
public class UserServiceImpl implements UserService{
@Autowired
UserMapper userMapper;
@Override
public User login(User visitor) {
return userMapper.login(visitor.getUserName());
}
public void signUp(User user) {
userMapper.signUp( user );
}
}
UserMapper.java接口
package com.xueba.boke.dao;
import com.xueba.boke.bean.User;
import org.springframework.stereotype.Repository;
/**
* Create by yyq on 2018/1/17
*/
@Repository
public interface UserMapper {
public User login(String userName);
public void signUp(User user);
}
UserMapper.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.xueba.boke.dao.UserMapper">
<!--public User login(String userName);
SELECT user_name as userName, user_pwd as userPwd FROM userInfo WHERE user_name=#{userName}-->
<select >
SELECT * FROM userInfo WHERE user_name=#{userName}
</select>
<!--public void signUp(User user);-->
<!-- parameterType：参数类型，可以省略，
获取自增主键的值：
mysql支持自增主键，自增主键值的获取，mybatis也是利用statement.getGenreatedKeys()；
useGeneratedKeys="true"；使用自增主键获取主键值策略
keyProperty；指定对应的主键属性，也就是mybatis获取到主键值以后，将这个值封装给javaBean的哪个属性
-->
<insert >
INSERT INTO userInfo(user_name, user_pwd, email) VALUES(#{userName}, #{userPwd}, #{email})
</insert>
</mapper>